A conservation biologist investigates whether there is a correlation between the ambient noise level near a major highway, NNN (measured in decibels), and the nesting density of a local songbird species, DDD (measured in nests per square kilometre).
The biologist monitors 25 distinct forest zones at varying distances from the highway.
They hypothesize that there is a significant negative correlation between the ambient noise level and the nesting density of the songbirds.
Explain what is meant by a Type II error in the context of this study.
121 exam-style questions on AQA A Level Psychology Inferential testing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.